CN202205674U - Low voltage electrodynamic type power-on automatic closing circuit after power failure of breaker - Google Patents
Low voltage electrodynamic type power-on automatic closing circuit after power failure of breaker Download PDFInfo
- Publication number
- CN202205674U CN202205674U CN2011203573878U CN201120357387U CN202205674U CN 202205674 U CN202205674 U CN 202205674U CN 2011203573878 U CN2011203573878 U CN 2011203573878U CN 201120357387 U CN201120357387 U CN 201120357387U CN 202205674 U CN202205674 U CN 202205674U
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- power
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- breaker
- power down
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Abstract
The utility model relates to a low voltage electrodynamic type power-on automatic closing circuit after power failure of a breaker. A power-on locking circuit after power failure and a power-on reclosing circuit after power failure are connected in a control loop of the breaker, a control power supply of the power-on locking circuit after power failure is connected with the mains supply end of a main loop breaker, and a locking relay is composed of a middle voltage relay and a self-insurance loop. The low voltage electrodynamic type power-on automatic closing circuit enable the breaker to have automatic reclosing function after power failure of mains supply, no other power supply is needed to be added, cannot achieve the reclosing function on the conditions of fault tripping and manual brake separating of the breaker, and performs power-on automatic reclosing only after power failure. The low voltage electrodynamic type power-on automatic closing circuit is simple in structure and basically does not need maintenance.
Description
Technical field
The utility model relates to a kind of low tension dynamic formula circuit breaker back incoming call automatic closing circuit that has a power failure, and particularly a kind ofly can realize that existing circuit breaker does not have the combined floodgate circuit of the back incoming call automatic switching-in function that has a power failure.
Background technology
Existing circuit breaker does not have the back incoming call automatic switching-in function that has a power failure, this for general low-voltage distribution room do not have 24 hours on duty, have the problem that can not in time send electricity after having a power failure.Addressing the above problem, is to take to remove the under voltage tripping defencive function basically, promptly with the insulation cord under-voltage release is tied.Do like this, have several shortcomings:
A. make circuit breaker not have the under voltage tripping defencive function.Do like supply voltage low excessively like this. can cause many power consumption equipment cisco unity malfunctions, even cause the accident.
B. some breaker open operation is through the normally-closed contact button, control under voltage tripping coil, and realization separating brake function; Some breaker protection function action tripping operation also realizes through control under voltage tripping coil.As tie device for under-voltage releasing equipment, can't realize above-mentioned functions.
To above shortcoming, there are engineers and technicians to invent omnipotent breaker incoming call automatic closing device.This device is provided with intermediate relay ZJ and time relay sj in control loop; And be parallel with bridge shape current rectifying and wave filtering circuit to time relay power supply at this intermediate relay ZJ and time relay sj two ends, and through this rectification filtering circuit to electric capacity or battery charge.After the civil power power down, keep power down to haul oneself willingly into the operate as normal of circuit through direct current additional supplies such as electric capacity or batteries again.But, the circuit relative complex of this way, and no matter electric capacity and battery all need daily bigger maintenance.
Summary of the invention
The circuit relative complex that hidden danger and additional straight current circuit are arranged for incoming call reclosing implementation method after the power down that overcomes above-mentioned existing circuit breaker and device; And no matter electric capacity and battery all need the deficiency of daily bigger maintenance; Incoming call automatic closing circuit after the utility model provides a kind of simple and reliable low tension dynamic formula circuit breaker to have a power failure; This circuit need not additional other power supply; Can make circuit breaker only after the civil power power down, accomplish the automatic reclosing function, for all not realizing the reclosing function under tripping operation of circuit breaker failover and the artificial separating brake situation, the fault of having avoided answering behind fault trip and the artificial separating brake again reclosing to bring to equipment enlarges and operates inconvenient situation.
The technical scheme that the utility model adopted is: in the control loop of circuit breaker, connect the reclosing circuit of sending a telegram here after power down electric locking circuit and the power down afterwards; The mains terminal of power down electric locking circuit control power supply connection afterwards major loop circuit breaker; Blocking relay is made up of intermediate voltage relay and self-keeping circuit thereof.
In the combined floodgate circuit, connect a rotary switch (SA), be used for distinguishing incoming call automatic reclosing circuit-mode after closing by hand circuit-mode and the power down; The normally closed interlock of a voltage relay of series connection in the incoming call automatic reclosing loop is used for distinguishing the locking contact because of power down undervoltage trip and fault trip and artificial separating brake after power down; Connect the loop of latching of recovering after the power down, this latchs the loop is made up of the coil and the self-keeping contact of voltage relay, and its entry condition is the circuit breaker auxiliary contact after the manual closing operation success, and the recovery condition is the control loss of power because of causing after the civil power power down.
The beneficial effect of the utility model is; Can make circuit breaker only after the civil power power down, accomplish the automatic reclosing function; Need not additional other power supplys, for all can not realizing the reclosing function under tripping operation of circuit breaker failover and the artificial separating brake situation, and the automatic reclosing that only can after power down, send a telegram here.Only needing increases a voltage relay, simple in structure, need not safeguard basically.
Description of drawings
Fig. 1 is the circuit theory diagrams of the utility model.
Embodiment
The embodiment of the utility model is described further with embodiment below in conjunction with accompanying drawing 1.
1. when receiving electrical circuit breakers to satisfy combined floodgate condition and the power supply of needs combined floodgate, rotary switch SA is rotated to manual side, press switch knob QA by the operation electrician, then the closing coil HQ of circuit breaker Q F is through fuse F U, and knob SA gets.Breaker closing.After the breaker closing success, it is closed that it often opens auxiliary contact QF, incoming call reclosing block relay K A after the startup power down.Knob is threaded to the automatic reclosing side, and the normally closed locking contact of KA KA opens, and locked loop comes into force.Get into the unattended operation state.
2. when causing the circuit breaker failure tripping operation as if appearance because of faults such as main circuit overcurrent, short circuits; Though the QF tripping operation causes that often opening auxiliary contact QF breaks off, because city's voltage still exists, KA is by himself auxiliary contact KA self-insurance; Its latch contact KA still breaks off; Closing coil can not get electric, so false switching can not occur, avoids fault further to enlarge.
3. when needing artificial separating brake, be ground safety such as assurance personnel, equipment.Artificial sub-gate circuit is selected without knob, that is: no matter when, in case opening button press, then to guarantee circuit breaker can be reliably, separating brake efficiently.At this moment, even rotary switch is at the automatic reclosing state, though QF tripping operation causing auxiliary contact QF breaks off; But exist because civil power is appointed still, KA is by himself auxiliary contact KA self-insurance, and its latch contact KA still breaks off; Closing coil can not get electric, so also false switching can not occur.
4. after the civil power outage, circuit breaker Q F trips because of under-voltage coil losing electricity, and auxiliary contact QF opens.Simultaneously, the control loss of power causes the blocking relay dead electricity, and locked loop is removed.When the city power recovery, the breaker closing coil is through rotary switch SA, and the normally closed auxiliary contact QF of locking contact KA and circuit breaker gets electric combined floodgate.After closing a floodgate successfully, locked loop comes into force again.
Claims (2)
1. the low tension dynamic formula circuit breaker back incoming call automatic closing circuit that has a power failure is characterized in that: in the control loop of circuit breaker, connect the reclosing circuit of sending a telegram here after power down electric locking circuit and the power down afterwards; The mains terminal of power down electric locking circuit control power supply connection afterwards major loop circuit breaker; Blocking relay is made up of intermediate voltage relay and self-keeping circuit thereof.
2. incoming call automatic closing circuit after a kind of low tension dynamic formula circuit breaker according to claim 1 has a power failure; It is characterized in that: in the combined floodgate circuit, connect a rotary switch (SA), be used for distinguishing incoming call automatic reclosing circuit-mode after closing by hand circuit-mode and the power down; The normally closed interlock of a voltage relay of series connection in the incoming call automatic reclosing loop is used for distinguishing the locking contact because of power down undervoltage trip and fault trip and artificial separating brake after power down; Connect the loop of latching of recovering after the power down, this latchs the loop is made up of the coil and the self-keeping contact of voltage relay, and its entry condition is the circuit breaker auxiliary contact after the manual closing operation success, and the recovery condition is the control loss of power because of causing after the civil power power down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203573878U CN202205674U (en) | 2011-09-22 | 2011-09-22 | Low voltage electrodynamic type power-on automatic closing circuit after power failure of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203573878U CN202205674U (en) | 2011-09-22 | 2011-09-22 | Low voltage electrodynamic type power-on automatic closing circuit after power failure of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202205674U true CN202205674U (en) | 2012-04-25 |
Family
ID=45969780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203573878U Expired - Fee Related CN202205674U (en) | 2011-09-22 | 2011-09-22 | Low voltage electrodynamic type power-on automatic closing circuit after power failure of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202205674U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167812A (en) * | 2014-08-26 | 2014-11-26 | 国家电网公司 | Two-inlet one-buscouple self-input and self-restoration control system |
| CN106410741A (en) * | 2015-07-27 | 2017-02-15 | 山东变电工有限公司 | Self-power transmission device of universal circuit breaker |
| CN109474062A (en) * | 2018-12-26 | 2019-03-15 | 大连普阳铁路车辆配件有限公司 | Step down side switchs automatic closing control device |
-
2011
- 2011-09-22 CN CN2011203573878U patent/CN202205674U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167812A (en) * | 2014-08-26 | 2014-11-26 | 国家电网公司 | Two-inlet one-buscouple self-input and self-restoration control system |
| CN106410741A (en) * | 2015-07-27 | 2017-02-15 | 山东变电工有限公司 | Self-power transmission device of universal circuit breaker |
| CN106410741B (en) * | 2015-07-27 | 2019-04-05 | 山东一变电工有限公司 | A kind of omnipotent breaker from power transmission device |
| CN109474062A (en) * | 2018-12-26 | 2019-03-15 | 大连普阳铁路车辆配件有限公司 | Step down side switchs automatic closing control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20140922 |
|
| EXPY | Termination of patent right or utility model |